As physiological nystagmus, involuntary eye movement can reflect visual fatigue objectively and accurately as compared with NP and CFF.

• 固视运动是注视静止点视标时眼球产生的无意识的微小运动,与调节近点距离和闪烁融合频率相比,能够客观、准确地反映视觉系统的疲劳状态。